/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.linkis.resourcemanager.conf;

import org.apache.linkis.common.conf.CommonVars;
import org.apache.linkis.manager.common.entity.resource.Resource;

public enum ResourceStatus {

    /**
     * normal: left resource/max resource < normalThreshold warn: normalThreshold <= left
     * resource/max resource < warnThreshold critical: left resource/max resource >= warnThreshold
     */
    normal,
    warn,
    critical;

    public static Float normalThreshold =
            CommonVars.apply("wds.linkis.resourcemanager.resource.threashold.normal", 0.5f)
                    .getValue();

    public static Float warnThreshold =
            CommonVars.apply("wds.linkis.resourcemanager.resource.threashold.warn", 0.2f)
                    .getValue();

    public static ResourceStatus measure(Resource leftResource, Resource maxResource) {
        if (leftResource != null && maxResource != null) {
            if (leftResource.$less$eq(maxResource.$times(warnThreshold))) {
                return critical;
            } else if (leftResource.$less$eq(maxResource.$times(normalThreshold))) {
                return warn;
            } else {
                return normal;
            }
        }
        return normal;
    }
}
